The Evidence for the Top Quark, originally published in 2004 (and now available in paperback!), combines a historical and a philosophical perspective on the initial evidence for the top quark, announced by two collaborations at Fermi National Accelerator Laboratory in the mid-1990s. Both the history and the philosophy draw upon extensive interviews with physicists involved in the experiments. My narrative begins with the theoretical developments that incorporated the top quark into the Standard Model of physics, through the planning and design of the Tevatron accelerator and the massive detector used by the CDF collaboration, through the engineering challenges and data collection, and right into the heart of the methodological disputes over the analysis and interpretation of the data.